CPC Main Group
H01J 17/00 Gas-filled discharge tubes with solid cathode (H01J25/00, H01J27/00, H01J31/00 - H01J41/00 take precedence; gas filled spark gaps H01T; Marx converters H02M7/26)
5 direct subcodes
Child Classifications
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- H01J 17/02 Details
- H01J 17/38 Cold-cathode tubes
- H01J 17/50 Thermionic-cathode tubes
- H01J 17/64 Tubes specially designed for switching or modulating in a waveguide, e.g. TR box